Posters

Optical coherence tomography angiography features of the central macula following repair of rhegmatogenous retinal detachments

Poster Details

First Author: S.Handa INDIA

Co Author(s):    V. Gupta   A. Agarwal   K. Agarwal   R. Agarwal   R. Singh   M. Dogra              

Abstract Details



Purpose:

Patients with macula-off rhegmatogenous retinal detachments (RRD) may have suboptimal visual recovery despite successful reattachment due to various reasons such as loss of photoreceptors. However, retinal microvascular changes in the central macula following reattachment have not been adequately studied. Using optical coherence tomography angiography (OCT-A), we evaluated the retinal microvasculature in subjects undergoing surgery for RRD.

Setting:

Retina clinic of the Advanced Eye Centre, Post Graduate Institute of Medical Education and Research, Chandigarh, India – A tertiary care referral centre in Northern India.

Methods:

In a case-control study, analysis of OCT-A findings of 18 eyes of 18 patients (12 males) who underwent RRD surgery at a tertiary institute were compared with 20 eyes of 20 age and gender-matched healthy subjects with no known ocular disease. 3 × 3 mm OCT-A scans were obtained in addition to enhanced-depth imaging OCT. The findings on OCT-A were compared with normal controls for perfusion indices and additional findings.

Results:

Mean age of the patients was 30.1 years and controls was 28.5 years. Six eyes had inferior RD. Seventeen eyes underwent primary scleral buckling and 1 eye underwent vitrectomy-buckle with C3F8 tamponade. None of the eyes had re-detachment during the follow-up at 3 months. The best-corrected visual acuity improved from counting fingers to mean of 0.73 ± 0.34 LogMAR. OCT-A was performed after 3 months of surgery. Patients with RRD showed evidence of increased intercapillary spacing on en face OCT-A. Mean vessel flow density (VFD) among patients was 34.37 ± 0.7% and 35.27 ± 0.2% in the superficial and deep retinal plexus, respectively, compared to 56.12 ± 2.2% and 59.64 ± 1.9% among controls (p<0.001).

Conclusions:

Mean age of the patients was 30.1 years and controls was 28.5 years. Six eyes had inferior RD. Seventeen eyes underwent primary scleral buckling and 1 eye underwent vitrectomy-buckle with C3F8 tamponade. None of the eyes had re-detachment during the follow-up at 3 months. The best-corrected visual acuity improved from counting fingers to mean of 0.73 ± 0.34 LogMAR. OCT-A was performed after 3 months of surgery. Patients with RRD showed evidence of increased intercapillary spacing on en face OCT-A. Mean vessel flow density (VFD) among patients was 34.37 ± 0.7% and 35.27 ± 0.2% in the superficial and deep retinal plexus, respectively, compared to 56.12 ± 2.2% and 59.64 ± 1.9% among controls (p<0.001).

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